The calculated distance (air line) between Shahrak-e Emām Ḩasan and Varāmīn is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Varāmīn is certainly longer, as only the direct route (as the crow flies) between Shahrak-e Emām Ḩasan and Varāmīn has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles